diff --git a/application/basilisk/base/content/browser.xul b/application/basilisk/base/content/browser.xul
index 2aeb9b842e..df7f88f67a 100644
--- a/application/basilisk/base/content/browser.xul
+++ b/application/basilisk/base/content/browser.xul
@@ -96,6 +96,9 @@
       <menuitem id="context_unpinTab" label="&unpinTab.label;" hidden="true"
                 accesskey="&unpinTab.accesskey;"
                 oncommand="gBrowser.unpinTab(TabContextMenu.contextTab);"/>
+      <menuitem id="context_dublicTab" label="&dublicTab.label;"
+                accesskey="&dublicTab.accesskey;"
+                oncommand="duplicateTabIn(TabContextMenu.contextTab,'tabshifted');"/>
       <menuitem id="context_openTabInWindow" label="&moveToNewWindow.label;"
                 accesskey="&moveToNewWindow.accesskey;"
                 tbattr="tabbrowser-multiple"
diff --git a/application/basilisk/locales/en-US/chrome/browser/browser.dtd b/application/basilisk/locales/en-US/chrome/browser/browser.dtd
index e6517603fb..b4063b5877 100644
--- a/application/basilisk/locales/en-US/chrome/browser/browser.dtd
+++ b/application/basilisk/locales/en-US/chrome/browser/browser.dtd
@@ -40,6 +40,8 @@ can reach it easily. -->
 <!ENTITY  pinTab.accesskey                   "P">
 <!ENTITY  unpinTab.label                     "Unpin Tab">
 <!ENTITY  unpinTab.accesskey                 "b">
+<!ENTITY  dublicTab.label                    "Dublicate Tab">
+<!ENTITY  dublicTab.accesskey                "d">
 <!ENTITY  moveToNewWindow.label              "Move to New Window">
 <!ENTITY  moveToNewWindow.accesskey          "W">
 <!ENTITY  bookmarkAllTabs.label              "Bookmark All Tabs…">
diff --git a/application/palemoon/base/content/browser.xul b/application/palemoon/base/content/browser.xul
index 9575199813..15d987575e 100644
--- a/application/palemoon/base/content/browser.xul
+++ b/application/palemoon/base/content/browser.xul
@@ -89,6 +89,9 @@
       <menuitem id="context_unpinTab" label="&unpinTab.label;" hidden="true"
                 accesskey="&unpinTab.accesskey;"
                 oncommand="gBrowser.unpinTab(TabContextMenu.contextTab);"/>
+      <menuitem id="context_dublicTab" label="&dublicTab.label;"
+                accesskey="&dublicTab.accesskey;"
+                oncommand="duplicateTabIn(TabContextMenu.contextTab,'tabshifted');"/>
       <menuitem id="context_openTabInWindow" label="&moveToNewWindow.label;"
                 accesskey="&moveToNewWindow.accesskey;"
                 tbattr="tabbrowser-multiple"
diff --git a/application/palemoon/locales/en-US/chrome/browser/browser.dtd b/application/palemoon/locales/en-US/chrome/browser/browser.dtd
index 33cf0bb9f3..c3999e1976 100644
--- a/application/palemoon/locales/en-US/chrome/browser/browser.dtd
+++ b/application/palemoon/locales/en-US/chrome/browser/browser.dtd
@@ -37,6 +37,8 @@ can reach it easily. -->
 <!ENTITY  pinTab.accesskey                   "P">
 <!ENTITY  unpinTab.label                     "Unpin Tab">
 <!ENTITY  unpinTab.accesskey                 "b">
+<!ENTITY  dublicTab.label                    "Dublicate Tab">
+<!ENTITY  dublicTab.accesskey                "d">
 <!ENTITY  moveToNewWindow.label              "Move to New Window">
 <!ENTITY  moveToNewWindow.accesskey          "W">
 <!ENTITY  bookmarkAllTabs.label              "Bookmark All Tabs…">